95 corolla 277k miles. 4 hours into a long trip went over a huge bump and the shocks seemed to “bottom out”. Like they compressed as much as they could.
Pulled over half hour later for a break.
After that drove rest of way home. Car started shuddering and slowing down going up a hill. Had to floor it just to get it to be 60 mph. Hill wasn’t that steep. Seemed to do ok on flat parts.
Was a little low on gas so pulled over to fill up.
Noticed car idled very roughly felt like it was going to stall while pulling into gas station.
Gas cap was a little loose. Didn’t hear the whoosh of the vacuum you usually hear when undoing the gas cap either.
After that it seemed to be a little better going up hills. I drove it home, and a day later drove it and it seemed to go up hills ok.
It still idles very weirdly, roughly and like it’s about to stall. While driving it sounds ok.
What do you think? I was thinking fuel pump but now i’m not sure. It might be related to the gas cap, maybe the bump loosened it.